off, in the words of the white house, a move to hold the u.s. economy hostage and force drastic spending cuts. i'm steve handelsman, news4. >>> security is a big concern this inauguration. special forces arrived today to help with crowd control. with details on how security is being mustled up. >> you know when you see a jersey barrier like we have here, that obviously means don't go there, but they don't work well on the water. >> it's no secret or surprise that a presidential inauguration means changes on d.c. city streets. 6,000 troops are coming to -- they'll be highly visible. >> for that 48-hour period, the waterways will be closed to all recreational boating traffic. >> reporter: security officials say there's no specific maritime threat nor one on land, but all always they choose to air on the side of caution. >> we're helping to ensure the safety and security of the public. keeping a gulls eye view of the pa tom mac. >> we had a full shutdown for the entire two days of the inauguration. this time we're going to allow the vessels to oper